Apparatus for preventing escape of gas from gas-generators during the stoking operation.



No- 740,757. PATENTED OCT. 6, 1903.'

J. HOPMANN'& F.VON STAGH. APPARATUS FOR PREVENTINGBSGAPE 0F GAS FROM GASGENERATORS DURING THE STOKING OPERATION.

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UNiTnn STATES Patented October 6, 1903.

PATENT Trice.

JUSTUS HOFMANN, OF WITKOWITZ, AND FRIEDRICH VON STACH, OF KLADNO,AUSTRIA-HUN GARY.

APPARATUS FOR PREVENTING ESCAPE 0F GAS FROM GAS-GENERATORS DURING THESTOKING OPERATION.

SPEC-lFICATION forming part of Letters Patent N 0. 740,757, datedOctober 6, 1903. Application filed February 16, 1903. Serial No.148,696. No model.)

To all whmn it ntay concern:

Be it known that we, JUsrUs HOFMANN, of Witkowitz, and FRIEDRICH RITT-ERvon STAOH, of Kladno, Moravia, Austria-Hungary, subjects of the Emperorof Austria- Hungary, have invented certain new and useful Improvementsin Apparatus for Preventing Escape of Gas from Gas-Generators During theStoking Operation, of which the following is a specification.

The present invention has reference to improvements in apparatus forpreventing escape of gas during generation, and relates more especiallyto an apparatus to take the place of the ordinary cover of the retortorcupola in gas-generators for the purpose of preventing escape of gasupon the cover being removed from the retort for stoking, cleaning, orinspection purposes. With the construction of cover now in use theattendant is exposed to gas-poisoning, and at the same time acomparatively large amount of gas escapes every time the cover isopened.

In order to make the invention more readily understood, we will nowdescribe it with reference to the accompanying sheet of drawings, ofwhich Figure 1 represents a sectional elevation of the new cover. Fig. 2is a plan view of same, the cover-lid being removed.

The apparatus essentially consists of a cupshaped head-piece a, which isprovided with bolt-holes b or other suitable means for securing it tothe retort or cupola. In the upper enlarged part is arranged a pipe-coilc, communicating at its straight end with the one Way d of the cock f,the other way 9 of which communicates Withasteam-pipe. (Not shown in thedrawings.) Upon the inner circumference this pipe-coil is provided withfine perforationsh, their axes extending slantingly, as shown by dottedlines in Fig. 1. The cock fis rigidly secured to the head-piece a in anysuitable manner. To the top end of the turning cock member m isrigidlysecured the lid 2, with handle is in such a position that whenthe lid is in the closed position, as in Fig; 1, the passage Z in thecock member m is at right angles with respect to the Ways cl and g,respectively, of the cock. If, however,

the lid is swung about its pivot for the purpose of givingaccess to theinterior of the retort during working, then the passage Z is broughtinto communication with the cock- Ways, so that steam can pass into thepipecoil and out of the slanting perforations 7t and effectually keepback the gases. Upon the lid being swung shut again the steam is turnedoff again simultaneously.

What we claim, and desire to secure by Letters Patent, is-

1. Apparatus for preventing escape of gas from gas-generators during thecoal-stoking or the like operation, comprising a head-piece withstoke-opening, secured to the gas-retort, a steam-pipe coil withinwardly-slanting perforations, encircling the stoke-opening, aremovable lid for the said head-piece,and means for automaticallyadmitting steam into the said coil, upon the cover being removed,substantially as and for the purpose set forth.

2. Apparatus for preventing escape of gas from gas-generators during thestoking or the like operation, comprising a cup-shaped headpiece withcentral stoke-opening, means for securing the said head-piece to thegas-retort, a pipe-coil with slanting perforations in its innercircumference, concentrically arranged to the said central stoke-openingwithin the said head-piece, a straight pipe end communicating with thesaid pipe-coil, a steam-cock, adapted to communicate with thesaidstraight pipe end and with a steam-pipe, a cover-lid rigidly securedto the said steam-cock and cooperating therewith so that upon the onebeing closed, the otheris opened, the parts being constructed, arrangedand cooperating substantially as and for the purpose set forth.

In testimony that we claim the foregoing as our invention We have signedour names in presence of two subscribing witnesses.

JUSTUS IIOFMANN. FRIEDRICH VON STAOH.

\Vitnesses t0 signature of Justus Hofmann:

J osnn WALTER, PAUL JACOBS.

Witnesses to signature of F. von Stach:

ALAIS KUHN, HERMANN FUX.

